Skylake supports 3 pin and 3 converter widgets. But by default only one converter and pin widget are enabled. In skylake platform the DP port is on a different port which is not enabled by default. To enable playback on DP port, enable all pin and converter widget by sending a vendor VERB for a vendor widget to set required bits.
As we are enabling the DP support enable the DP1.2 feature as well.
Enabling DP1.2 and all widget changes are copied from patch_hdmi.c.
Signed-off-by: Subhransu S. Prusty subhransu.s.prusty@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com --- sound/soc/codecs/hdac_hdmi.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+)
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c index d22fa6b..b2e5e54 100644 --- a/sound/soc/codecs/hdac_hdmi.c +++ b/sound/soc/codecs/hdac_hdmi.c @@ -629,6 +629,46 @@ static int hdac_hdmi_add_pin(struct hdac_ext_device *edev, hda_nid_t nid) return 0; }
+#define INTEL_VENDOR_NID 0x08 +#define INTEL_GET_VENDOR_VERB 0xf81 +#define INTEL_SET_VENDOR_VERB 0x781 +#define INTEL_EN_DP12 0x02 /* enable DP 1.2 features */ +#define INTEL_EN_ALL_PIN_CVTS 0x01 /* enable 2nd & 3rd pins and convertors */ + +static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdac) +{ + unsigned int vendor_param; + + vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0, + INTEL_GET_VENDOR_VERB, 0); + if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS) + return; + + vendor_param |= INTEL_EN_ALL_PIN_CVTS; + vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0, + INTEL_SET_VENDOR_VERB, vendor_param); + if (vendor_param == -1) + return; +} + +static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdac) +{ + unsigned int vendor_param; + + vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0, + INTEL_GET_VENDOR_VERB, 0); + if (vendor_param == -1 || vendor_param & INTEL_EN_DP12) + return; + + /* enable DP1.2 mode */ + vendor_param |= INTEL_EN_DP12; + vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0, + INTEL_SET_VENDOR_VERB, vendor_param); + if (vendor_param == -1) + return; + +} + /* * Parse all nodes and store the cvt/pin nids in array * Add one time initialization for pin and cvt widgets @@ -641,6 +681,9 @@ static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev) struct hdac_hdmi_priv *hdmi = edev->private_data; int ret;
+ hdac_hdmi_skl_enable_all_pins(hdac); + hdac_hdmi_skl_enable_dp12(hdac); + num_nodes = snd_hdac_get_sub_nodes(hdac, hdac->afg, &nid); if (!nid || num_nodes <= 0) { dev_warn(&hdac->dev, "HDMI: failed to get afg sub nodes\n");